TBIT to T7 is about a 15 min walk, straight shot down the sidewalk landside. Your choice of upper (departure) level or lower (arrival) level. The recommendation is usually take the elevator or stairs up to the upper level for fresh air and lower noise level. You can also take the Terminal Connector bus from the lower level at pink sign but the closest pick up point from TBIT is at T4 (basically, you have to walk either way so I recommend just walking to T7).
Google Map walking direction TBIT to T7
From T7 to T2, you can walk via East Way (the road next to the Theme Building). Walk from T7 towards T6 and then use the lower level crosswalk at East Way and take East Way to T2. It will be about 7 or 8 min walk. But there are lots of construction at LAX near the Theme Building at the moment so taking the Terminal Connector bus is probably not a terrible idea.
Google Map walking direction T7 to T2
Link to the PDF map for buses
https://www.flylax.com/lax-traffic-a...sportation#ten